linux-kernel - [PATCH 41/46] Staging: hv: vmbus: Fix a bug in error handling in vmbus_bus

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Message-Id: <1314469905-7058-41-git-send-email-kys@microsoft.com>
Date:	Sat, 27 Aug 2011 11:31:40 -0700
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...e.de, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, virtualization@...ts.osdl.org
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: [PATCH 41/46] Staging: hv: vmbus: Fix a bug in error handling in vmbus_bus_init()

Fix a bug in error handling in vmbus_bus_init().

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
---
 drivers/staging/hv/vmbus_drv.c |   21 ++++++++++-----------
 1 files changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c
index 02edb11..4d1b123 100644
--- a/drivers/staging/hv/vmbus_drv.c
+++ b/drivers/staging/hv/vmbus_drv.c
@@ -492,7 +492,7 @@ static int vmbus_bus_init(int irq)
 
 	ret = bus_register(&hv_bus);
 	if (ret)
-		return ret;
+		goto err1;
 
 	ret = request_irq(irq, vmbus_isr, IRQF_SAMPLE_RANDOM,
 			driver_name, hv_acpi_dev);
@@ -500,10 +500,7 @@ static int vmbus_bus_init(int irq)
 	if (ret != 0) {
 		pr_err("Unable to request IRQ %d\n",
 			   irq);
-
-		bus_unregister(&hv_bus);
-
-		return ret;
+		goto err2;
 	}
 
 	vector = IRQ0_VECTOR + irq;
@@ -514,16 +511,18 @@ static int vmbus_bus_init(int irq)
 	 */
 	on_each_cpu(hv_synic_init, (void *)&vector, 1);
 	ret = vmbus_connect();
-	if (ret) {
-		free_irq(irq, hv_acpi_dev);
-		bus_unregister(&hv_bus);
-		return ret;
-	}
-
+	if (ret)
+		goto err3;
 
 	vmbus_request_offers();
 
 	return 0;
+
+err3:	free_irq(irq, hv_acpi_dev);
+err2:	bus_unregister(&hv_bus);
+err1:	hv_cleanup();
+
+	return ret;
 }
 
 /**
-- 
1.7.4.1

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